Jar



FIG. 1 is a front elevation view of a jar showing my new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevation view thereof; and,

FIG. 5 is a left side elevation view thereof.

The broken lines shown in the drawings represent unclaimed environment and are for illustrative purposes only, forming no part of the claimed design. 

The ornamental design for a jar, as shown and described. 